Development of Hydraulic Drive Railway Bearings Installation System Pınar Demircioğlu 1(&) , İsmail Böğrekçi 1 , and Mehmet Temel 2 1 Mechanical Engineering Department, Aydin Adnan Menderes University, Aydin, Turkey {pinar.demircioglu,ibogrekci}@adu.edu.tr 2 Inotim Engineering Company LLC., Istanbul, Turkey mehmet.temel@inotim.com Abstract. The vehicles such as locomotive, passenger and freight wagons, metros, trams etc. used in railway sectors need quick and precise installation and removal of bearings to the wheels with a hydraulic system. Solid state modelling was carried out using CAD software and all machine assembly was done in assembly environment. Determination of mechanical strength and other parameters using static structural analysis was carried out by FEA methods. The system has an innovative and modular design. Since the fixture has a 180° force affecting the forehead of the bed, the risk of deformation during the disassembly process is very high. In this study, a 360° fixture design was made to prevent this deformation. Manufactured prototype was tested in a factory environment. Keywords: Rail wheel Á Wagon wheel Á Poor disassembly Á Mounting Á Dismounting 1 Introduction The increasing importance of the railway sector in freight and passenger transport is evident due to reduced energy resources and safe transportation reasons. Developments in the world and particularly in the rail sector investments in Turkey is the major cause of the conducted research. The main task of the research is to identify the current needs of the industry. In this context, the needs of the railway sector were investigated. It is observed that there is a problem in the bearings of the railway wheels. Due to the increasing demand for safer and quicker rail transportation, rolling stock wheelsets operating under high axle loads, speed and heavy usage require more rig- orous and reliable maintenance and inspection. While in service, wheelsets are con- stantly operating under harsh conditions including rolling contact fatigue, thermal variations and impact [1]. It is generally known that bearing damages occur because of [2]: • Improper lubrication, insuf ficient lubrication, excessive lubrication or invasion of impurities into the bearing area. • Excessive load, fatigue damages on rolling surfaces and rolling elements. • Excessive rotation speed. © The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG 2021 N. M. Durakbasa and M. G. Gençyılmaz (Eds.): ISPR 2020, LNME, pp. 866–875, 2021. https://doi.org/10.1007/978-3-030-62784-3_72